[Bug] Command autocomplete shows duplicate suggestions, obscuring cursor position

Bug Description
whenever i type in "/", a lot of duplicated suggestions are showing and it's hard to find what i'm looking for or where the cursor is currently at

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.1.167
• Feedback ID: 78322e84-b14d-4298-861d-8af100939509

Errors

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Screenshot
<img width="1496" height="649" alt="Image" src="https://github.com/user-attachments/assets/ad4caf1a-713c-4337-b18e-0eebca3119fe" />
the first two always appears on top so it's even harder to understand the search results